Note 63 — Chapter II
Reading edition
An inquiry, or series of inquiries, into the physiological side of social and political development is obviously necessary, and must be made before sociology can on this side attain much scientific precision. I know, however, no general treatise on the subject except an old essay on Changes Produced in the Nervous System by Civilisation, by Dr. Robert Verity (2nd ed., Edinburgh, 1839). This is suggestive, but, of course, tentative. Cp. Ferrero, Greatness and Decline of Rome, Eng. trans, i, 298-99.